Charles M. Evans manufactured Doctor Hoofland’s Celebrated German Bitters in Philadelphia, Pennsylvania. Christolph Wilheim Hoofland invented the eponymous bitters in Germany in the 1840s and the product was introduced in America in 1850 by Charles M. Jackson. C.M. Evans was a clerk in Jackson’s firm, and by 1867, the business directories list Evans as the sole proprietor of Hoofland’s German Bitters. C.M. Evans had an essay prepared, most likely in 1866.